malt noch, inzwischen in v. 4.0.6, und zu Gordons Freude auch in w10
This update adds the ability to install custom shapes, is updated for Windows 10, and fixes some minor bugs and crashes.
New: You can now create and install custom shapes for the Shapes tool.
New: Updated to work better with Windows 10.
New: Increased the maximum brush size to 2000.
New: IndirectUI-based effect plugins can now provide help text, accessible via the question mark button.
New: Effect plugins may now access the current palette via IPalettesService.
Improved: Reduced memory usage of brush tools when using large brush sizes.
...

v. 4.0.7
Changed: .NET Framework 4.6 is now required, and will be installed if necessary
New: Swedish translation
various performance improvements
Improved Shapes tool quality when drawn without antialiasing, with line styles, and at 1 pixel brush width
Improved Shapes tool rendering performance on CPUs with many cores (8+)
...

paint.net 4.0.12 - Download, released on September 12th, 2016
This is a hotfix that fixes some crashing on single CPU systems, and a rendering bug in the Rounded Rectangle shape.

Fixed: The Rounded Rectangle shape's rendering was incorrect for some values of "Corner size"
Fixed: Effects and Adjustments were crashing the app on systems with only 1 CPU core, or virtual machines configured for only 1 CPU

paint.net 4.0.11 - released on September 10th, 2016
This update adds the ability to configure the Rounded Rectangle shape's corner size. It also fixes issues with scrolling and panning, effect rendering performance, high DPI, and a rare system hang caused by WPF.
New: The Rounded Rectangle shape's corner size ("radius") is now configurable
New: Overscroll can now be disabled from within Settings
Fixed: The Zoom tool was broken in 4.0.10
Fixed: Auto scroll will no longer engage overscroll. This prevents the image from shooting off in all directions when drawing on it or when making a selection.
Fixed: Panning with the middle mouse button would sometimes be "sticky", as reported at http://forums.getpaint.net/index.php?/t ... is-sticky/
Fixed: Effect rendering performance had significantly regressed in 4.0.10, by as much as 50%, on Intel CPUs with HyperThreading. http://forums.getpaint.net/index.php?/t ... windows-7/
Fixed: Selecting the entire image and then using Zoom to Selection or the Zoom Tool would align the image in an awkward manner
Fixed: In rare cases, Settings -> Plugin Errors was hanging the whole system (bug in WPF?). This UI is now implemented in WinForms instead of WPF. http://forums.getpaint.net/index.php?/t ... zelockout/
Fixed: Some more high-DPI issues, especially when using multiple monitors with mixed DPI, or when using Remote Desktop

Paint.NET 4.0.13:
Fixed "Missing api-ms-win-core-timezone-l1-1-0.dll" error that was being seen on some Windows 7 systems due to partial install or uninstall of Microsoft's Universal C Runtime
Fixed the layout for the File->New, Image->Resize, and Image->Canvas Size dialogs in all known situations (various languages, DPI sizes, font configurations)
Fixed: Old versions of PSD plugin couldn't load due to removal of PrivateThreadPool
Fixed a crash when typing a negative number for a zoom level

v 4.0.14:
* Improved the performance of the Brush tools when antialiasing is enabled
* Improved the quality of the Brush tools when antialiasing is disabled
* Fixed: Edit->Paste wasn't working with some images that came from Firefox
* Fixed: Improved the reliability of Image->Crop to Selection on 32-bit systems. Instead of crashing when it runs out of memory, it will just show an error.
* Fixed: Reduced crashes when loading UI images caused by an unreliable Windows component ("System.ArgumentException: Parameter is not valid")
* Fixed: When manually checking for updates in the Settings dialog and the user didn't actually have the necessary security privileges, a crash might result instead of an error dialog.

v. 4.0.18
Improved: Startup performance has been improved by about 25%
New: Now available on the Windows Store!
Improved: Plugins can now be installed per-user into "Documents\paint.net App Files" into folders named Effects, FileTypes, and Shapes.
Improved: When using Portable Mode, custom palette files are stored next to the EXE instead of in Documents

v 4.0.19
This is a hotfix that fixes a startup crash, and fixes Explorer thumbnails.

Fixed missing thumbnails in Explorer for non-.PDN images (e.g. .PNG, .JPG), if Paint.NET was configured to open these types by default
Fixed a crash at startup that affected some people with a redirected Documents folder (e.g. network share)